The edge of a cube is measured using a vernier callipers. [`9` divisions of the main scale is equal to `10` divisions of the vernier scale and `1` main scale dividsion is `1 mm`]. The main scale division reading is `10` and `1st` division of vernier scale was found to be coinciding with the main scale. The mass of the cube is `2.736 g`. Calculate the density in `g//cm^3` upto correct significant figures.

Answer

`2.66 g//cm^(3)`

Explanation

Least count overtime callipers
`=(1-(9)/(10))mm=0.1mm`
Side of cube `= 10 mm + 1xx 0.1 mm`
`= 10.1 mm = 1.01 cm`
Density `= (2.736)/((1.01)^(3))=2.66g//cm^(3)`